DOI QR코드

DOI QR Code

Egg Laying Capacity of Hap/orchis taichui (Digenea: Heterophyidae) in Humans

  • Sato, Megumi (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University) ;
  • Sanguankiat, Surapol (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University) ;
  • Pubampen, Somchit (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University) ;
  • Kusolsuk, Teera (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University) ;
  • Maipanich, Wanna (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University) ;
  • Waikagul, Jitra (Department of Helminthology, Faculty of Tropical Medicine, Mahidol University)
  • Published : 2009.09.30

Abstract

Quantitative fecal egg counts represented as the number of eggs per gram of feces (EPG) are generally a reliable parameter to estimate the worm burden of intestinal and hepatic parasitoses. Although Haplorchis taichui (Digenea: Heterophyidae) is one of the most common minute human intestinal flukes, little is known about the relationship between EPG and the actual worm burden in patients or the severity of the disease. In the present study, fecal samples were collected from 25 villagers in northern Thailand before and after praziquantel treatment. The EPG values of each participant were determined by the modified cellophane thick smear method, and adult worms were collected from the whole stool after the treatment. Eggs per day per worm (EPDPW) of H. taichui were estimated 82 from egg counts and expelled worms. The EPG was not well correlated with the worm burden, and a reverse correlation was observed between the EPDPW and the worm burden.

Keywords

References

  1. Belizario VY Jr, de leon WU, Bersabe MJ, Purnomo, Baird JK, Bangs MJ. A focus of human infection by Haplorchis taichui (Trematoda: Heterophyidae) in the southern Philippines. J Parasitol 2004; 90: 1165-1169 https://doi.org/10.1645/GE-3304RN
  2. Radomyos B, Wongsaroj T, Wilairatana P, Radomyos P, Praevanich R, Meesomboon V, Jongsuksuntikul P. Opisthorchiasis and intestinal fluke infections in northern Thailand. Southeast Asian J Trop Med Public Health 1998; 29: 123-127
  3. Kumchoo K, Wongsawad C, Chai JY, Vanittanakom P, Rojanapaibul A. High prevalence of Haplorchis taichui metacercariae in cyprinoid fish from Chiang Mai Province, Thailand. Southeast Asian J Trop Med Public Health 2005; 36: 451-455
  4. Thien PC, Dalsgaard A, Thanh BN, Olsen A, Murrell KD. Prevalence of fishborne zoonotic parasites in important cultured fish species in the Mekong Delta, Vietnam. Parasitol Res 2007; 101: 1277-1284 https://doi.org/10.1007/s00436-007-0633-5
  5. Rim HJ, Sohn WM, Yong TS, Eom KS, Chai JY, Min DY, Lee SH, Hoang EH, Phommasack B, Insisengmay S. Fishborne trematode metacercariae detected in freshwater fish from Vientiane Municipality and Savannakhet Province, Lao PDR. Korean J Parasitol 2008; 46: 253-260 https://doi.org/10.3347/kjp.2008.46.4.253
  6. Katz N, Chaves A, Pellegrino J. A simple device for quantitative stool thick-smear technique in schistosomiasis mansoni. Rev Inst Med Trop Sao Paulo 1972; 14: 397-400
  7. Waikagul J, Anantaphruti MT, Nuamtanong S, Sanguankait S. Evaluation of the modified formalin detergent technique for detection of intestinal parasites. In Hayashi et al. eds, Collected Papers on the Control of Soil-transmitted Helminthiases (by the APCO Research Group) 1997; 6: 5-11
  8. Chai JY, Park JH, Han ET, Guk SM, Shin EH, Lin A, Kim JL, Sohn WM, Yong TS, Eom KS, Min DY, Hwang EH, Phommasack B, Insisiengmay B, Rim JH. Mixed infections with Opisthorchis viverrini and intestinal flukes in residents of Vientiane Municipality and Saravane Province in Laos. J Helminthol 2005; 79: 283-289 https://doi.org/10.1079/JOH2005302
  9. Sukontason K, Unpunyo P, Sukontason KL, Piangjai S. Evidence of Haplorchis taichui infection as pathogenic parasite: three case reports. Scand J Infect Dis 2005; 37: 388-390 https://doi.org/10.1080/00365540510034473
  10. Anderson RM, Schad GA. Hookworm burdens and faecal egg counts: an analysis of the biological basis of variation. Trans R Soc Trop Med Hyg 1985; 79: 812-825 https://doi.org/10.1016/0035-9203(85)90128-2
  11. Yoshida Y. Medical Zoology. 2nd ed. Tokyo, Japan. Nanzando. 1992, p 130-131 (in Japanese)
  12. Lee SK, Chung NS, Ko IH, Sohn WM, Hong ST, Chai JY, Lee SH. An epidemiological survey of Echinostoma hortense infection in Chongsong-gun, Kyongbuk Province. Korean J Parasitol 1988; 26: 199-206 https://doi.org/10.3347/kjp.1988.26.3.199
  13. Son WY, Huh S, Lee SU, Woo HC, Hong SJ. Intestinal trematode infections in the villagers in Koje-myon, Kochang-gun, Kyongsangnam-do, Korea. Korean J Parasitol 1994; 32: 149-155 https://doi.org/10.3347/kjp.1994.32.3.149
  14. To M, Okuma H, Ishida Y, Imai S, Ishii T. Fecundity of Pharyngostomum cordatum parasitic in domestic cats. Jpn J Vet Sci 1998; 50: 908-912 https://doi.org/10.1292/jvms1939.50.908
  15. WHO. Control of foodborne trematode infections. WHO Technical Report Series 1995; 849: 1-157

Cited by

  1. Population dynamics and host reactions in young foxes following experimental infection with the minute intestinal fluke, Haplorchis pumilio vol.6, pp.None, 2009, https://doi.org/10.1186/1756-3305-6-4
  2. Molecular phylogeny of trematodes in Family Heterophyidae based on mitochondrial cytochrome c oxidase subunit I (mCOI) vol.7, pp.6, 2009, https://doi.org/10.1016/s1995-7645(14)60072-9
  3. JAID/JSC 感染症治療ガイドライン2015 ―腸管感染症― vol.90, pp.1, 2009, https://doi.org/10.11150/kansenshogakuzasshi.90.31
  4. Intestinal parasites in rural communities in Nan Province, Thailand: changes in bacterial gut microbiota associated with minute intestinal fluke infection vol.147, pp.9, 2009, https://doi.org/10.1017/s0031182020000736